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Sucked up a rock; impeller question

We have a local guy here that does great work. Had him repair some props for me and no complaints and will not hesitate to take my impellers to him. Actually never heard anything bad about his work from anyone

If only he was by me!
 
It's hard to say. It was on a lake I've been on countless times, but clearly not an area I've ever gone through. My depth said it was about 3 feet but I'm just not sure. It was a super shallow channel/bar that wasn't marked or anything just out in the middle of the damn lake (the lake averages 30-60+ feet deep just about everywhere).

I plan on hooking up the hose and turning the engine over and listening and feeling how it runs.

Do you agree that the housing needs to be replaced, too?

I think I'll order the OEM impeller, but would love additional opinions on the ring thing. And whether or not I have to replace the whole housing or if it's just an inner liner than needs to be replaced.

Not sure about the housing. What speed where you at when you ingested this SOB?
 
This is helpful. Thank you. I guess I'm just not sure what "bad" looks like for the wear ring. I figured that the impeller would be okay save for some performance.

I don't live overly close to the water so it isn't super easy to swing out to test. If it sounds fine on the hose then maybe I'll live with it until I'm able to replace the impeller, and just get one ordered.

I need some special tool to remove the impeller, right?

not 100% sure this is the correct part # but similar,

it's threaded to insert the shaft so you can put a wrench on the flat sides to hold it still, then you can rotate the impeller to unscrew it,

we have a couple write ups in the FAQ at the top of the page,

The only problem with keeping what you have is that you don't know what it is, what if you plan you day on the water and only to find out you only get 10mph or a bad vibration ?? then your day is shot,
 
Not sure about the housing. What speed where you at when you ingested this SOB?

I had it throttled way down. The second I saw the depth jump up (down?) to being shallow I cut the power and tried to avoid going farther into it. So, not very fast. Unfortunately it rattled around in there as I limped it back until it finally came through.
 
not 100% sure this is the correct part # but similar,

it's threaded to insert the shaft so you can put a wrench on the flat sides to hold it still, then you can rotate the impeller to unscrew it,

we have a couple write ups in the FAQ at the top of the page,

The only problem with keeping what you have is that you don't know what it is, what if you plan you day on the water and only to find out you only get 10mph or a bad vibration ?? then your day is shot,

Yeah, that's kind of what I'm afraid of, honestly. I would hate to get it out and have it be much worse than previously thought.
 
also, if you don't want to do it, if you have a jet ski shop close by, if you pull the impeller, which is very simple, you can take the impeller/shaft to them and they could possibly turn it around while you wait, if you have the tool and a new impeller it's really just off and back on,

for the wear ring they may could do that also, I've never done that before, it may be worth a call, just make sure they understand it's a jet boat and not thinking it's a Yamaha outboard,
 
There's one thing that I still don't understand. Is the wear ring just the insert inside of the housing (like this: SBT Wear Rings: ShopSBT.com) or is it the entire housing? Which thing am I supposed to actually replace?
 
I think your original OEM part does not have an replaceable insert. The parts diagram confirms it. You can replace with an aftermarket options that has a replaceable sleeve in case this happens again, then it's a cheaper fix at that time.
 
I think your original OEM part does not have an replaceable insert. The parts diagram confirms it. You can replace with an aftermarket options that has a replaceable sleeve in case this happens again, then it's a cheaper fix at that time.

Ahhh! That answers it. Thank you!
 
Btw, now that I'm thinking about it - might be wise of me to buy a spare impeller - what's the best place to purchase OEM from?
 
I'm cheap, I will compare price+shipping from a few vendors and pick the cheapest one. Not supper committed to one place vs. another
 
My 2 cents: The impeller is definitely toast and needing replacement (no news there). As to the wear ring, I would be inclined to replace the impeller and see how it goes. I do see some scratches on the ring, but they don't look deep (and probably pretty consistent with sucking up rocks). Now, I say this a) being cheap myself, and b) knowing that it is dirt simple to pull the pumps on these things, so it is not like you are going into the belly of the beast and back to replace the impeller and then having to go back into the belly to replace the wear ring if needed.

Usual mode of failure of wear rings is that the corrode and swell and start to impact the impeller (thus reducing the needed clearance). So then they need replacing. That is not your situation at all...
 
My 2 cents: The impeller is definitely toast and needing replacement (no news there). As to the wear ring, I would be inclined to replace the impeller and see how it goes. I do see some scratches on the ring, but they don't look deep (and probably pretty consistent with sucking up rocks). Now, I say this a) being cheap myself, and b) knowing that it is dirt simple to pull the pumps on these things, so it is not like you are going into the belly of the beast and back to replace the impeller and then having to go back into the belly to replace the wear ring if needed.

Usual mode of failure of wear rings is that the corrode and swell and start to impact the impeller (thus reducing the needed clearance). So then they need replacing. That is not your situation at all...

Maybe I'll just try that first, then. When I replace the impeller, is there anything else that I need to do (grease anything, whatever)? I'm assuming I'll want to loctite all of the bolts when I put them back in, right?
 
There are only 4 bolts (and then you unhook the bucket). If you loctite them, use only the temporary kind (blue).

The other maintenance item while you are in the neighborhood is to pull off the cones and check for water intrusion, regrease, replace the seal, and reassemble. So buy a seal for that and grease while you are getting things.
 
I had it throttled way down. The second I saw the depth jump up (down?) to being shallow I cut the power and tried to avoid going farther into it. So, not very fast. Unfortunately it rattled around in there as I limped it back until it finally came through.
In the future you want to kill the engines immediately. I would only keep going if I felt like not doing so would put my boat in jeopardy. I rolled over a rock bar with my first jet boat, yanked the lanyard immediately and pulled out a baseball sized rock from the clean out! I couldn't believe how it made it past the grate! But because I pulled the lanyard right away, I got away with just a couple of small dings.

Running these boats out of the water - they sound like a blender full of metal anyway...so not sure that will give you a good idea of how she runs. I'd take her to the lake and run it. You can't really do any more damage unless one of the blades was really bend and folded and jammed your housing (and they don't look bent).
 
In the future you want to kill the engines immediately. I would only keep going if I felt like not doing so would put my boat in jeopardy. I rolled over a rock bar with my first jet boat, yanked the lanyard immediately and pulled out a baseball sized rock from the clean out! I couldn't believe how it made it past the grate! But because I pulled the lanyard right away, I got away with just a couple of small dings.

Running these boats out of the water - they sound like a blender full of metal anyway...so not sure that will give you a good idea of how she runs. I'd take her to the lake and run it. You can't really do any more damage unless one of the blades was really bend and folded and jammed your housing (and they don't look bent).

Yeah, I realized that after the fact unfortunately. It also got dark and there wasn't a single person out on the lake at that point and didn't have a choice but to limp it in. In hindsight, I should've checked the clean out port and made 100% certain it was clear, but a bit of panic set in clearly.

I just went out and double checked what I could see. Nothing in the intake. The rear housing looks fine. The wear ring doesn't feel like there's any damage beyond just the scratches (there's a wear line where the impeller spins, but it isn't crazy deep or anything, and the impeller just has a couple knicks taken out of it. Otherwise, it isn't bent or anything somehow.

Figure I'll look at ordering a replacement impeller and just replacing that to start when it comes. Getting out to the lake to run a test isn't super easy as it's near an hour away. I guess my thought is to hook it up with the hose and run it to a) make sure it turns over still, and b) that there isn't some loud grinding noise or anything. Maybe blast the throttle a couple of times to make sure.

Now, I'm just trying to decide if it makes more sense to save money and go refurbished on the impeller for $99, or buy a brand new OEM one for $226. Any thoughts on that one?


Edit: I just went OEM. Read some interesting reviews on SBT's program and shied away from it. Now, I have to find that impeller tool. Bleh.
 
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